Also discovered were photographs — including images of at least one of the victims in the case — of women who appeared dead or unconscious and what prosecutors called a "rape journal" during a search of Naso's Reno, Nev., house.
Naso characterized the photographs as his art and said all of his "models" were willing participants.
He showed the jury dozens of photographs he took of weddings, landscapes and family members along with what he called "glamour" or "cheesecake" photographs of nude women. He said he never forced any of them to do anything.
But prosecutors say Naso kept a list of his victims, and mementos of his alleged killings.
Near the pile of photos in Naso's home — with mannequin parts and women's lingerie strewn about — investigators said they also found a "List of 10" he had scrawled with descriptions of 10 women, including four references prosecutors believe describe the slaying victims in this case.
Slote also said she believed investigators had identified a fifth woman on the list: No. 8, "Girl in Woodland (Nevada County)." Slote said she believed No. 8 is a reference to a missing girl named Sara Dylan.
Dylan's passport was found in Naso's safe deposit box, along with news clippings covering the slayings of Parsons and Tafoya, which Naso had laminated with photographs he had taken of each woman, and $152,400 in cash.
Naso told the jury that he had collected obituaries "ever since I was a boy."
A skull found in Nevada County held DNA matching Dylan's mother's profile, Slote said.
Naso is not charged with Dylan's murder, but the jury heard evidence about her case as prosecutors sought to tie Naso's list to more cold cases.
There is no indication that any of the five other women referred to on the list have been identified, but prosecutors have said the investigation is ongoing.